Zeta Jones receiving treatment for bipolar disorder

Catherine Zeta Jones has previously received treatment for bipolar disorder Credit: Ian West/PA Wire

Catherine Zeta Jones has checked into a facility for further treatment for her bipolar disorder.

The Oscar-winning Welsh actress, who completed a stint in a US mental-health facility in 2011, is believed to have signed in for a 30-day programme, so doctors could monitor her condition.

Her publicist Cece Yorke confirmed the news to People.com, saying "Catherine has proactively checked into a health care facility.

"Previously, Catherine has said that she is committed to periodic care in order to manage her health in an optimum manner."

She has previously said of the illness: "This is a disorder that affects millions of people and I am one of them. If my revelation of having bipolar II has encouraged one person to seek help, then it is worth it.

"There is no need to suffer silently and there is no shame in seeking help."